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engines/hpl1/graphics.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "hpl1/graphics.h"
+
+#include "common/config-manager.h"
+#include "graphics/renderer.h"
+#include "graphics/surface.h"
+#include "hpl1/opengl.h"
+
+namespace Hpl1 {
+
+#ifdef HPL1_USE_OPENGL
+static Graphics::RendererType getBestRendererType() {
+	Common::String renderConfig = ConfMan.get("renderer");
+	Graphics::RendererType desiredRendererType = Graphics::Renderer::parseTypeCode(renderConfig);
+	uint32 availableRendererTypes = Graphics::Renderer::getAvailableTypes();
+	// only the following renderer types are supported for now
+	availableRendererTypes &= Graphics::kRendererTypeOpenGL | Graphics::kRendererTypeOpenGLShaders | Graphics::kRendererTypeTinyGL;
+	return Graphics::Renderer::getBestMatchingType(
+		desiredRendererType, availableRendererTypes);
+}
+#endif
+
+bool areShadersAvailable() {
+#ifdef HPL1_USE_OPENGL
+	return getBestRendererType() == Graphics::kRendererTypeOpenGLShaders;
+#else
+	return false;
+#endif
+}
+
+Common::ScopedPtr<Graphics::Surface> createViewportScreenshot() {
+#ifdef HPL1_USE_OPENGL
+	return createGLViewportScreenshot();
+#else
+	return nullptr;
+#endif
+}
+
+bool useOpenGL() {
+#ifdef HPL1_USE_OPENGL
+	Graphics::RendererType bestRendererType = getBestRendererType();
+	return bestRendererType == Graphics::kRendererTypeOpenGL ||
+	       bestRendererType == Graphics::kRendererTypeOpenGLShaders;
+#else
+	return false;
+#endif
+}
+
+} // namespace Hpl1